Product data

The receiving interface must be able to process the signals, which are provided via open collector circuits (fig. 1). Output signal features are listed in table 1. The phase shift is the delay between the two signals’ rise events (fig. 2). It is 1/4 of the period, or 90 electric degrees. The duty cycle value is the high state of the signal compared to the full period (fig. 2). It is nominally 50%.

Power supply

Resistors

Pull-up resistors (table 2) should be placed between the voltage supply and the conductors for the output signals to limit the output current to 20 mA. The application load resistance between the ground line and the conductors for the output signals should be at least 10 times higher than the resistance of the pull-up resistor. This helps to keep the output signals readable.

Detecting direction of rotation

A positive phase shift corresponds to signal B rising before signal A and indicates the inner ring rotating clockwise when viewed from the sensor side.